LG LCD won't fully power up, randomly powers down

LG model 47LB5D (maunfactured Oct. 2007, purchased Dec.2008). Over the last three months the television would on occassion fail to fully power up: Green LED would flash and then glow steadily, the screen would go from black to dark gray, but no video or audio and without the "No Signal" icon. Pressing buttons on the remote (e.g. Menu) will cause the green LED to flash in acknowledgement, but otherwise no effect. The problem has become more frequent until this week when the television now turns itself off after less than a minute, with the faint declining pitch sound that the old tube televisions used to make when they failed. (No sparks or ozone, though!) I presume a failing/failed circuit board, but would appreciate any alternative insights/suggestions from the crowd. The television is six months out of warranty, too expensive to replace right now, but hopefully not too expensive to repair.

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This advice applies to all appliances manufactured by Maytag. Determining the manufactured date of most appliances is accomplished by looking at the SERIAL NUMBER. On Maytag appliances this is determined by the following method:The LAST two letters in the serial number identifies the date code.

This advice applies to all appliances manufactured by Maytag. Determining the manufactured date of most appliances is accomplished by looking at the SERIAL NUMBER. On Maytag appliances this is determined by the following method:
The LAST two letters in the serial number identifies the date code.

In March of 2007 Epson started putting a different chip in some of their cartridges so that refill companies couldn't refill them. My printer is a CX8400 just purchased last Oct but manufactured Dec of 2007. The date they changed the cartridges was March of 2007. You must then buy cartridges Original OEM or find a company that has cartridges for before that date or after depending on when your printer was made. Look at the bottom of the printer for little clock dials and you can determine the date of manufacture. On mine the first number was the year and the second the month. Check ink companies online to see if this applies to your printer. Some ink companies don't mention this or just send you the wrong ones.The older cartridges will not work in the newer models.